b7621b2a08
Add another mdp5_hw_mixer pointer (r_mixer) in mdp5_crtc_state. This mixer will be used to generate the right half of the scanout. With Source Split, a SSPP can now be connected to 2 Layer Mixers, but has to be at the same blend level (stage #) on both Layer Mixers. A drm_plane that has a lesser width than the max width supported, will comprise of a single SSPP/hwpipe, staged on both the Layer Mixers at the same blend level. A plane that is greater than max width will comprise of 2 SSPPs, with the 'left' SSPP staged on the left LM, and the 'right' SSPP staged on the right LM at the same blend level. For now, the drm_plane consists of only one SSPP, therefore, it needs to be staged on both the LMs in blend_setup() and mdp5_ctl_blend(). We'll extend this logic to support 2 hwpipes per plane later. The crtc cursor ops (using the LM cursors, not SSPP cursors) simply return an error if they're called when the right mixer is assigned to the CRTC state. With source split is enabled, we're expected to only SSPP cursors. This commit adds code that configures the right mixer, but the r_mixer itself isn't assigned at the moment. Signed-off-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com> |
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README
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.